N-doped carbon nanolayer modified nickel foam: A novel substrate for supercapacitors

Su，Liwei1; Zhan，Jing1; Gu，Qihang1; Chen，Huan1; Wang，Lianbang1; Wang，Yuanhao2; Hu，Qing2; Ren，Manman3

2021-04-30

10.1016/j.apsusc.2020.148754

APPLIED SURFACE SCIENCE   影响因子和分区

0169-4332

1873-5584

Nickel foam (NF) is the most commonly-used current collector for supercapacitors due to open porous structures, good electrical conductivity, and excellent mechanical toughness. However, its insufficient specific surface area (SSA) and surface trace O affect the nucleation, nanostructures, and mass loadings of active materials, severely limiting the mass- and area-specific energy densities of electrodes. Therefore, it is of vital importance to achieving a higher SSA and preferred chemical composition. This work proposes a novel route to modify the surface with an N-doped carbon nanolayer (about 50 nm thick, ~1 wt% of the NF) and studies its influence on the morphology regulation and capacitive performance of NiCoMn-based carbonate hydroxide (as a case study). The preparation, chemical composition, and microstructure of the nanolayer are studied in depth. The morphology evolution of the carbonate hydroxide refers to shapes (from needles to flakes), flake thicknesses (5.2–18.4 nm), and mass loadings (0.8–6.0 mg cm). The optimized nanoflake delivers twice mass-specific capacitance and 4.5-folds area-specific capacitance of the nanoneedle at 1.0 A g in aqueous electrolytes. The reversible capacitance is 1818F g (909C g) at 10 A g, with 95% retention after 10,000 cycles. The solid-state asymmetric capacitor offers a maximum energy density of 91.22 Wh kg at a power density of 400 W kg that is highly competitive related to reported works.

Current collectors N-doped carbon Nickel foams Supercapacitors Surface modification

SCI ; EI

英语

其他

Natural Science Foundation of Zhejiang Province["LGG18B030001","LGG20B030002"] ; Key Research and Development Program of Science and Technology Department of Zhejiang Province[2017C01023] ; National Natural Science Foundation of China[61705258]

Chemistry ; Materials Science ; Physics

Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter

WOS:000620365800001

ELSEVIER

20210609879811

Capacitance ; Carbon ; Doping (additives) ; Foams ; Nanostructures ; Nickel ; Supercapacitor

Nickel:548.1 ; Electricity: Basic Concepts and Phenomena:701.1 ; Nanotechnology:761 ; Chemical Products Generally:804 ; Solid State Physics:933 ; Materials Science:951

MATERIALS SCIENCE

2-s2.0-85100270436

Scopus

1.State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology,College of Chemical Engineering,Zhejiang University of Technology,Hangzhou,310014,China
2.SUSTech Engineering Innovation Center,School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.Institute of Materials Science and Engineering,Qilu University of Technology,Jinan,China

Su，Liwei,Zhan，Jing,Gu，Qihang,et al. N-doped carbon nanolayer modified nickel foam: A novel substrate for supercapacitors[J]. APPLIED SURFACE SCIENCE,2021,546.

Su，Liwei.,Zhan，Jing.,Gu，Qihang.,Chen，Huan.,Wang，Lianbang.,...&Ren，Manman.(2021).N-doped carbon nanolayer modified nickel foam: A novel substrate for supercapacitors.APPLIED SURFACE SCIENCE,546.

Su，Liwei,et al."N-doped carbon nanolayer modified nickel foam: A novel substrate for supercapacitors".APPLIED SURFACE SCIENCE 546(2021).